diff --git a/stroom-core-client/src/main/java/stroom/processor/client/presenter/ProcessorPresenter.java b/stroom-core-client/src/main/java/stroom/processor/client/presenter/ProcessorPresenter.java
index 828c56dc7e2..bfbae8e4291 100644
--- a/stroom-core-client/src/main/java/stroom/processor/client/presenter/ProcessorPresenter.java
+++ b/stroom-core-client/src/main/java/stroom/processor/client/presenter/ProcessorPresenter.java
@@ -71,9 +71,9 @@ public class ProcessorPresenter extends MyPresenterWidget<ProcessorPresenter.Pro
     private ButtonView removeButton;
     private ButtonView permissionsButton;
 
+    private boolean allowCreate;
     private boolean allowUpdate;
     private boolean isAdmin;
-    private boolean allowEdit;
 
     private ExpressionOperator defaultExpression;
 
@@ -105,10 +105,10 @@ public void read(final DocRef docRef, final Object document, final boolean readO
         this.docRef = docRef;
         processorListPresenter.read(docRef, document, readOnly);
         if (document instanceof PipelineDoc) {
-            allowEdit = true;
+            allowCreate = true;
         } else if (document instanceof AnalyticRuleDoc) {
             processorType = ProcessorType.STREAMING_ANALYTIC;
-            allowEdit = true;
+            allowCreate = true;
         }
     }
 
@@ -128,7 +128,7 @@ public void setAllowUpdate(final boolean allowUpdate) {
 
     private void createButtons() {
         if (removeButton == null) {
-            if (allowEdit) {
+            if (allowCreate) {
                 addButton = processorListPresenter.getView().addButton(SvgPresets.ADD);
                 addButton.setTitle("Add Processor");
                 registerHandler(addButton.addClickHandler(event -> {
@@ -146,7 +146,7 @@ private void createButtons() {
                 }
             }));
 
-            if (allowEdit) {
+            if (allowCreate) {
                 duplicateButton = processorListPresenter.getView().addButton(SvgPresets.COPY);
                 duplicateButton.setTitle("Duplicate Processor");
                 registerHandler(duplicateButton.addClickHandler(event -> {
@@ -252,7 +252,7 @@ public MultiSelectionModel<ProcessorListRow> getSelectionModel() {
     }
 
     private void addProcessor() {
-        if (allowEdit) {
+        if (allowCreate) {
             edit(null, defaultExpression, null);
         }
     }
@@ -261,7 +261,7 @@ private void addProcessor() {
      * Make a copy of the currently selected processor
      */
     private void duplicateProcessor() {
-        if (allowEdit) {
+        if (allowCreate) {
             // Now create the processor filter using the find stream criteria.
             final ProcessorFilterRow row = (ProcessorFilterRow) selectedProcessor;
             final ProcessorFilter processorFilter = row.getProcessorFilter();
@@ -280,7 +280,7 @@ private void duplicateProcessor() {
     }
 
     private void editProcessor() {
-        if (allowEdit && selectedProcessor != null) {
+        if (selectedProcessor != null) {
             if (selectedProcessor instanceof ProcessorFilterRow) {
                 final ProcessorFilterRow processorFilterRow = (ProcessorFilterRow) selectedProcessor;
                 final ProcessorFilter filter = processorFilterRow.getProcessorFilter();
diff --git a/unreleased_changes/20240326_152934_719__4183.md b/unreleased_changes/20240326_152934_719__4183.md
new file mode 100644
index 00000000000..337c0747267
--- /dev/null
+++ b/unreleased_changes/20240326_152934_719__4183.md
@@ -0,0 +1,24 @@
+* Issue **#4183** : Fix processor filter edit.
+
+
+```sh
+# ********************************************************************************
+# Issue title: Can't edit a Proc Filter from the System/Processors tab
+# Issue link:  https://github.com/gchq/stroom/issues/4183
+# ********************************************************************************
+
+# ONLY the top line will be included as a change entry in the CHANGELOG.
+# The entry should be in GitHub flavour markdown and should be written on a SINGLE
+# line with no hard breaks. You can have multiple change files for a single GitHub issue.
+# The  entry should be written in the imperative mood, i.e. 'Fix nasty bug' rather than
+# 'Fixed nasty bug'.
+#
+# Examples of acceptable entries are:
+#
+#
+# * Issue **123** : Fix bug with an associated GitHub issue in this repository
+#
+# * Issue **namespace/other-repo#456** : Fix bug with an associated GitHub issue in another repository
+#
+# * Fix bug with no associated GitHub issue.
+```